I did a lab in which I added ionic solutions to tap and distilled water and another ionic solution. Distilled water is the control because it does not react to any solutions since it doesn't contain ions. But one of the lab questions I need to answer is:
These tests cannot absolutely confirm the absence of an ion. Why?
Thank you for helping.

Before a compound precipitates, the solution must become saturated with it. If the concentration of this compound is below saturation because one of the solutions mixed is too dilute (such as contaminated distilled water), no precipitate forms.

Answer this Question

First Name:

School Subject:

Answer:

Related Questions

chemistry - Distilled water normally contains dissolved CO2. When preparing NaOH...
chemistry - Distilled water normally contains dissolved CO2. When preparing NaOH...
muscle physiology - okay so we did a lab on muscle physiology. acquired one ...
sci. - keeping osmosis in mind, would it be better to soak wilted flowers in ...
chemistry - Consider a mixture of , albumin solution, and starch solutions in a ...
science - so would it be better to place a wilted flower in tap water or ...
SCI - so would it be better to place a wilted flower in tap water or distilled ...
Chemistry - I'm going over some post-laboratory questions for Conductivity of ...
bob -sci. - keeping osmosis in mind, would it be better to soak wilted flowers ...
Chemistry - I have to use the given concentration of 7.03 micromoles/liters to ...